package com.tang.server;

import io.netty.bootstrap.Bootstrap;
import io.netty.channel.ChannelFuture;
import io.netty.channel.ChannelOption;
import io.netty.channel.EventLoopGroup;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.socket.nio.NioDatagramChannel;
import lombok.extern.slf4j.Slf4j;

@Slf4j
public class NettyServer {

    public static void main(String[] args) {
        EventLoopGroup group = new NioEventLoopGroup();
        try {
            Bootstrap bootstrap = new Bootstrap();
            bootstrap.group(group)
                    .channel(NioDatagramChannel.class)
                    .option(ChannelOption.SO_BROADCAST, true) // 广播
                    .option(ChannelOption.SO_RCVBUF, 2048 * 1024) // 设置UDP读缓冲区为2M
                    .option(ChannelOption.SO_SNDBUF, 1024 * 1024) // 设置UDP写缓冲区为1M
                    .handler(new MyChannelInitializer());
            ChannelFuture channelFuture = bootstrap.bind(7397).sync();
            log.info("udp server start done!");
            channelFuture.channel().closeFuture().sync();
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            group.shutdownGracefully();
        }
    }

}
